Community ecologists study the factors that determine the abundance of different species. Theabundance of three algae species (in mg/mL) is quantified in two different lakes before and afteran unusually hot summer. The coordinates of these four samples inR3are (i) Lake A: (97,84,43)and (100,80,50) before and after summer, respectively, and (ii) Lake B: (23,59,22) and (20,63,15)before and after summer, respectively.(a) How does the magnitude of the change in algal community compare between the two lakes